Method and device for providing an electric connection

Abstract

A method for providing an electric connection between a wire ( 12 ) and a metal surface ( 10 ) by pressing a curved and stripped section ( 11 ) of the wire towards the metal surface and arranging a brazing pin ( 14 ) in close proximity to a concave side of the curved section. Electric power is supplied to the brazing pin in a pinbrazing process until a fluxing agent and a solder material carried by the brazing pin has been released and melted. A brazing gun ( 18 ) is electrically connected to a power supply ( 19 ), the brazing gun having an opening for holding a brazing pin, and the brazing pin having a circular cross section. A bending tool is used for bending a stripped section of an electric wire to a circular shape, wherein the diameter of the bent wire is adapted to the diameter of the brazing pin, and means are provide for pressing the bent wire against the metal surface while generating an arc between the brazing pin and the metal surface.

1 . A method for providing an electric connection between a wire ( 12 ) and a metal surface ( 10 ), characterised by
 pressing a curved section ( 11   a ) of the wire towards the metal surface,   arranging a brazing pin ( 14 ) in close proximity to a concave side of the curved section ( 11   a ), and   supplying electric power to the brazing pin in a pinbrazing process until a fluxing agent and a solder material carried by the brazing pin has been released and melted.   
   
   
       2 . The method in accordance with  claim 1 , further including the step of
 bending the wire to circular shape enclosing at least a tip of the brazing pin.   
   
   
       3 . The method in accordance with  claim 2 , further including the step of
 bending the wire to circular shape extending at least 300°.   
   
   
       4 . The method in accordance with  claim 1 , further including the step of
 engaging the curved section with the metal surface during the pinbrazing process.   
   
   
       5 . The method in accordance with  claim 4 , further including the step of
 pressing a ferrule against the curved section of the wire to engage the curved section with the metal surface.   
   
   
       6 . A device for providing an electric connection between a wire ( 11 ) and a metal surface ( 10 ), characterised by
 a brazing gun ( 18 ) electrically connected to a power supply ( 19 ), the brazing gun having an opening for holding a brazing pin ( 14 ), the brazing pin having a circular cross section,   a bending tool ( 21 ) for bending a stripped section of an electric wire ( 12 ) to form a curved section ( 11   a ), wherein the diameter of the curved section ( 11   a ) is adapted to the diameter of the brazing pin, and   means ( 13 ) for pressing the bent wire against the metal surface while generating an arc between the brazing pin and the metal surface.   
   
   
       7 . A device in accordance with  claim 6 , wherein the means for pressing the bent wire against the metal surface comprises a ferrule, the size of a through hole being sufficiently large to receive the brazing pin.